Little Red Hen's Coffeecake

2 sticks oleo/margerine
2 Cups sugar 
2 Tsp vanilla 
4 eggs 
2 Cups sour cream 
4 Cups flour 
1/2 Tsp salt 
2 Tsp baking soda 
2 Tsp baking powder

Filling: 
3/4 Cup brown sugar 
2 Tsp cinnamon 
3/4 Cup chopped walnuts 

Cream together oleo, sugar, and vanilla.
Add eggs and mix well.
Combine flour, salt, baking soda, and baking powder in separate bowl.
Add dry ingredients to egg/oleo mixture alternately with sour cream and mix well.
Fill a greased bundt pan 1/2 full.
Make a layer of filling.
Add batter to within 1/2 inch of top of pan.
Bake at 350 degrees for 1 hour or until toothpick inserted in center comes out clean.
Use remaining batter to make 8-inch cake pan, layering as above.

Filling:
Mix together brown sugar, cinnamon, and nuts.
Sprinkle in center layer.